/*
 * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
 *
 * The MIT License
 * Copyright © 2014-2022 Ilkka Seppälä
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.iluwatar.model.view.viewmodel;

import java.util.List;
import lombok.Getter;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.zk.ui.select.annotation.WireVariable;

/** BookViewModel class. */
public class BookViewModel {

  @WireVariable private List<Book> bookList;
  @Getter private Book selectedBook;
  private BookService bookService = new BookServiceImpl();

  @NotifyChange("selectedBook")
  public void setSelectedBook(Book selectedBook) {
    this.selectedBook = selectedBook;
  }

  public List<Book> getBookList() {
    return bookService.load();
  }

  /**
   * Deleting a book. When event is triggered on click of Delete button, this method will be
   * notified with the selected entry that will be referenced and used to delete the selected book
   * from the list of books.
   */
  @Command
  @NotifyChange({"selectedBook", "bookList"})
  public void deleteBook() {
    if (selectedBook != null) {
      getBookList().remove(selectedBook);
      selectedBook = null;
    }
  }
}
